What did Sparta gain in the Messenian Wars?

Sparta's dominance as a Greek city-state began with its invasion and takeover of the neighbouring state of Messenia that occurred in two stages, the First and Second Messenian Wars in the eighth century BCE. Historian, Paul Cartledge likens Spartan domination of Messenia to Britain's domination of Ireland - complete subjugation. This source-based homework task is designed to increase student understanding of the NSW Ancient History syllabus
Higher School Certificate course
Part II: Ancient Societies
Option I: Spartan Society to the Battle of Leuctra 371 BCE